#911F18
Closest named color: Brick Red (#8F1402). oklch(43.1% 0.151 28.7), rgb(145, 31, 24).
Aa
White text reads best on this color (8.70:1).
About this color
#911F18 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.151 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.017 away. White text reads best on it, at 8.70:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.151) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.41:1 |
| White text | 8.70:1 |
Values
| HEX | #911F18 |
| RGB | rgb(145, 31, 24) |
| HSL | hsl(3, 72%, 33%) |
| OKLCH | oklch(43.1% 0.151 28.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #911F18 | 8.70:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #911F18 | 2.41:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #911F18 text on white | 8.70:1 | AAA | Lc 88.4 | Fine for body text |
| #911F18 text on black | 2.41:1 | Fails | Lc -13.7 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#FDF3F1
oklch(97.1% 0.011 31.1)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F8CEC7
oklch(88.6% 0.049 29.1)
-
Step 300
300
#F4ABA0
oklch(80.8% 0.088 28.7)
-
Step 400
400
#EB7B6D
oklch(70.6% 0.141 28.5)
-
Step 500
500
#E25345
oklch(63.2% 0.181 28.8)
-
Step 600
600
#CD2F25
oklch(55.6% 0.196 28.8)
-
Step 700
700
#B11E18
oklch(49.1% 0.182 28.6)
-
Step 800
800 (this color)
#911F18
oklch(43.1% 0.151 28.7)
-
Step 900
900
#732019
oklch(37.6% 0.118 28.7)
-
Step 950
950
#441510
oklch(27.1% 0.074 28.9)
#911F18 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #433B16 | 0.161 |
| Deuteranopia (no green cones) | #5F5412 | 0.147 |
| Tritanopia (no blue cones) | #A0001F | 0.036 |
| Achromatopsia (no color) | #4B4B4B | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #911F18
#911F18
oklch(43.1% 0.151 28.7)
- #005B66
#005B66
oklch(43.1% 0.074 209)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #911F18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.017
- Blood Red #980002 ΔE 0.025
- Deep Red #9A0200 ΔE 0.025
- Red Brown #8B2E16 ΔE 0.026
- Brown Red #922B05 ΔE 0.026
- Auburn #9B2226 ΔE 0.026
- Carmine #9D0216 ΔE 0.029
- Burnt Red #9F2305 ΔE 0.034
Use #911F18 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.